star motions

• 恒星运动

star motions的用法和样例：

例句

1. Astrometry is not the only planet-hunting method to look for a star's motion as it is orbited by a planet.
   当恒星附近有一颗行星的时候天体测量并不是唯一的一种通过观察恒星运动搜寻行星的办法。
2. But the earth is in motion relative to the sun, the sun is in motion relative to some other star, and so on.
   但地球相对于太阳运动，太阳相对于某些其他恒星运动，等等。